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Preparation method of carrier-free talcum powder master batch

A technology of talcum powder masterbatch and talc powder, which is applied in the field of talc powder, can solve the problems of complicated processing technology and production technology, and achieve the effect of not being easily crushed

Active Publication Date: 2011-10-12
SHENYANG POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing technology is relatively complex
[0005] In terms of granulation, technologies such as extruded strand water cooling, hot-cut water-cooled or hot-cut air-cooled extrusion granulation and vacuum compression granulation are currently used. These granulation technologies require raw materials to be processed under vacuum compression or heating. , the production process is relatively complex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 96kg of water, 4kg of polyvinyl alcohol for mixing, take 20kg of mixed additives, and 80kg of 300-mesh talcum powder for uniform mixing and mixing, put the mixed talc powder into the extruder at room temperature and extrude, the granulation extrusion pressure is 1 M Pa, the extruded particles have a diameter of 3 mm and a length of 6 mm, and the extruded particles are dried at 150° C. for 1 hour to obtain the product.

Embodiment 2

[0021] Take 76.5kg of water, 13.5kg of ethanol, and 10kg of sodium silicate for mixing, take 15kg of mixed additives, and 85kg of 5000-mesh talc powder for uniform mixing and mixing, put the mixed talc powder into an extruder at room temperature and extrude, granulate and extrude The outlet pressure was 1.5 MPa, the extruded pellets had a diameter of 1 mm and a length of 4 mm, and the extruded pellets were dried at 120° C. for 0.5 hour to obtain a product.

Embodiment 3

[0023] Get water 94.05kg, butanol 4.95kg, Potassium Silicate 1kg mixes, other is with embodiment 2.

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PUM

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Abstract

The invention relates to a talcum powder, in particular to a preparation method of carrier-free talcum powder master batch. The preparation method of the carrier-free talcum powder master batch comprises the following steps of: preparation of additive: mixing diluent and binding agent according to a certain proportion, wherein the diluent accounts for 90-99 percent, and the binding agent accountsfor 1-10 percent; treatment of the talcum powder: stirring and mixing the mixed additive and talcum powder, wherein the additive accounts for 15-35 percent, and the talcum powder accounts for 65-85%;molding of the talcum powder: putting the mixed talcum powder into an extruder for extruding at the normal temperature, controlling the pelleting pressure to be 1-2 MPa, the diameter of the extruded granule to be 1-5mm and the length-diameter ratio to be 1-4; and drying the extruded granules at 120-180 DEG C for 0.5-1h, and obtaining the product, wherein the percent is weight percent. The preparation method has the advantages of solving the environment problem caused by rising powder in the using process of the traditional talcum powder.

Description

technical field [0001] The invention relates to a kind of talcum powder, in particular to a preparation method of carrier-free talcum powder masterbatch. Background technique [0002] Talc is a water-containing silicate mineral with a layered structure. It is commonly used in the form of flakes, scales or dense massive aggregates. The layers of its structural units are maintained by molecular bonds, and there are ionic bonds, covalent bond. The two structural unit layers are interlayer domains, which do not contain water and cations, and the unit layers are only connected by weak van derwaals, so they are easily dissociated into thin wafers. The flaky structure of talc powder can greatly improve some properties of the material when talc powder is filled with plastics. First, talc can improve the stiffness and creep resistance of filler materials at high temperatures. When the talcum powder particles are arranged according to the flow direction of the material during proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K3/38C08K7/16C08K9/00B01J2/20
Inventor 王松杨雪张爱玲黄亮
Owner SHENYANG POLYTECHNIC UNIV